You can buy strips pre-loaded with CCI primers. However I like Federal so I load my strips. The loading tool is similar to a primer tray with an added lever.
Slide in an empty strip
Dump primers on tray
shake a few times (the primers orientate and line up with the strip)
Press lever
done
Each strip holds 25 primers. The strips link together and auto advance in the APS tool. Very easy to use.
OH! So there’s a tool to load the strips! NICE! I might look into this. We need another priming tool.